Sintering temperature effect on ferroelectric and piezoelectric properties of lead-free piezoelectric (K0.5Na0.5)NbO3 ceramics

TFIR > Department of Electronics Engineering and Computer Science > journal > Item 987654321/1864

Please use this identifier to cite or link to this item: http://163.15.40.127/ir/handle/987654321/1864

Title:	Sintering temperature effect on ferroelectric and piezoelectric properties of lead-free piezoelectric (K0.5Na0.5)NbO3 ceramics
Authors:	Kai-Huang Chen Tsung-Fu Chine Jen-Hwan Tsai Chien-Min Cheng Chia-Lin Wu (東方設計學院電子與資訊系)
Contributors:	東方設計學院電子與資訊系
Keywords:	Lead-free potassium sodium niobate ceramic ferroelectric loop electromechanical coupling coefficients dielectric characteristics
Date:	2011-05
Issue Date:	2015-07-08 14:44:11 (UTC+8)
Abstract:	Lead-free potassium sodium niobate ceramic, with the nominal composition of K0.5Na0.5NbO3, were synthesized by conventional solid state sintering, and its dielectric, ferroelectric, and piezoelectric properties were characterized as a function of sintering temperature. The orthorhombic to tetragonal phase transition (TO-T) temperature of K0.5Na0.5NbO3 ceramic sample was about 220°C, and its Curie temperature was about 420°C. The high bulk density was obtained for all compositions by solid state sintering in air. Bulk density was increased with temperature and it reached to 4.4 g/cm3. The K0.5Na0.5NbO3 ceramic sample sintered at 1100°C was optimized densification properties. In addition, the ferroelectric loop and dielectric characteristics dependence of different sintering temperature for K0.5Na0.5NbO3 ceramic sample was obtained. Finally, we found that the piezoelectric constant (d33) was 160 pC/N, high remanent polarization (Pr) was 33mC/cm2, and high electromechanical coupling coefficients (kP) was about of 45%.
Relation:	Advanced Materials Reaearch, Vol.239-242, pp.994-997
Appears in Collections:	[Department of Electronics Engineering and Computer Science] journal

Files in This Item:

There are no files associated with this item.

View Licence

Loading...